I have an old Kohler kitchen sink. The drain flange measures 5 3/4 inches OD. The basket that fits in it is 4 1/4 inches OD. Made of brass. Do you know where I could find one of these, at least the basket which is shot.
The majority of all sinks made today are bored the same dimension. Not unless you have a very, VERY old sink. Take your old basket and match up at any store.